diff --git a/package.json b/package.json
index 2e53acd4..7cbf21a5 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,9 @@
   "activationEvents": [
     "onLanguage:yaml",
     "onLanguage:dockercompose",
-    "onLanguage:github-actions-workflow"
+    "onLanguage:github-actions-workflow",
+    "onLanguage:yaml-textmate",
+    "onLanguage:yaml-tmlanguage"
   ],
   "keywords": [
     "kubernetes",
diff --git a/src/extension.ts b/src/extension.ts
index 1aac4523..b2509243 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -121,6 +121,8 @@ export function startClient(
       { language: 'yaml' },
       { language: 'dockercompose' },
       { language: 'github-actions-workflow' },
+      { language: 'yaml-textmate' },
+      { language: 'yaml-tmlanguage' },
       { pattern: '*.y(a)ml' },
     ],
     synchronize: {